MC2 Data

What Happened

In August 2024, data aggregator MC2 Data left a database publicly accessible without a password which was subsequently discovered by a security researcher. The breach exposed the personal information of 2.1M subscribers to the service which was marketed under a series of different brand names. The data included email addresses, names and salted SHA-256 password hashes.

Compromised Data

Email addresses
Names
Passwords

Recommended Actions

Change Your Password

If you haven't changed your password on this service since the breach, do so immediately.

Enable Two-Factor Authentication

If 2FA is supported, add an extra layer of security to your account.

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Breach Overview

  • Affected Accounts:

    2.1 million

  • Breach Occurred:

    August 2024

  • Added to HIBP:

    15 Dec 2024

Recommended Actions

Change Your Password

If you haven't changed your MC2 Data password since 2024, do so immediately.

Enable Two-Factor Authentication

Add an extra layer of security to your account.

1Password

Use 1Password to generate and store strong, unique passwords for all your accounts.

Try 1Password